Cylinder-reboring device



Aug. M, 11923. Mmm@ A. PERRY CYLI NDER REBORING DEVI Filed Jan. 1o. 19222 SheeiS-sheet 1 Anim Pzrv @Hoang Aug. M, 1923.

A. PERRY CYLINDER REBORING DEVICE Filed Jan. lO. 1922 2 Sheets-Shea?l 2Ania/"fle Perg/a Hunan;

Patented Aug.. 14, 1323.

NUnirse stares F l Q E reiter ANTONE PERRY, OF OAKLAND, CALIFOENA,ASSGNOR TO SIMLLEX REBORING MACHINE COMPANY, OF OAKLAND, CALQIFORNIA, ACORPORATION OF CALI- FORNIA.

CYLIITDEE-REBORNG DEVSCE.

Application le. January 10, 1922.

To all 'whom t may concern.'

Be it known that l, ANToNn PERRY, a citi- Zen of the United States,residing at Oakland, in the county of Alameda and State of California,have invented certain new and useful Improvements in Cylinder-ReboringDevices, of which the following is a specification.

My invention is an 'approved cylinder reboring device comprising meansfor simultaneously and uniformly adjusting the cut- V-ter bits, meansfor locking the bits in adjusted position, and means for centering the-cutter with relation to the cylinder bore without the use of acentering spider.

Referring to the drawing forming a part ofthis specification:

Figure 1 is a vertical section of my invention.

Figure 2 is a plan view of the cutter washer.

Figure 3 is a plan view of the cone bearing for the cutter stem.

Figure 4 is a plan view. ofthe cutter mount.

Figure 5 is an elevation of the cutter mount.

In the drawings 1 indicates a cutter mount which is formed with acircular base 2 and a cylindrical ring member 3 upstanding centrallyfrom said base. The base 2 is provided with a plurality of radial slots4 and 5.spaced equi-distant apart, there being four slots 5 spaced 90Oapart andthe inner ends thereof extending under the ring member 3 nearlyto the inner side of said member and below four. openings 6 respectivelyin said member. The base 2 has also a plurality of notches 7 in itsperiphery spaced equi-distant apart between slots 4-4 and 5 5. The mount1 is detachably secured on the end of an engine cylinder 10 by bolts 11extending through slots 4 or 5 or through notches 7 and screwing intothe screw holes 12 in the end of the cylinder. The openings 6 receivethe heads of the bolts 11, whereby said bolts may be screwed into holes12 which are near the center of the cylinder. The ring member 3 has aninternal thread 13. A bearing support 14 has an external thread 15 onits lower end, which engages the thread 13 and screws into the upper endof the ring member 3 and an external flange 16 is formed on the support14 above the thread 15, which flange engages the top of Serial No.523,209.

the member 3 and limits the posit-ionV to which the support 14 may bescrewed into said member. The support 14 has an in-- verted conical bore17 in the upper end of which is an internal thread 18. A split conicalbearing 19 fits in the bore 17 said bearing being provided with aplurality of radial slots 2O in its periphery extending the entirelength thereof, the slot opposite the split 21 in the ring being widerthan the other slots to receive a pin 22 extending through the support14, whereby the bearing is held in the bore 17 against turning. Acylindrical cut-ter post 23 extends through the bearingl9 and supportsurrounds the upper enlarged end 25 of the bearing 19 and screws intothe thread 18 in the upper end of the bore 17 against an annularshoulder 2G on the bearing 19 at the base of said end 25, whereby thebearing 19 is forced tightly into the conical bore 17 and contractedsnugly around the post 23. The upper end of the post 23 is formed with awrench grip 27. rThe lower end 28 of the post is conical and is threadedabove said conical end.

A cutter 30 includes a ring 31 and a plurality of radial bits 32slidably mounted in radial grooves 33 in said ring. The ring 31 isinternally threaded to screw on the thread on the lower end of thecutter post 23. The inner ends of the bits 32 are beveled to engage thebeveled lower end 28 of the cutter post 23 so that as the ring 31 isscrewed on the post said beveled end 28 will engage the beveled innerends of said bits and force the bits outwardly to adjust the depth ofthe cut of said bits. A washer 34 ts on the post 23 against the upperend of the ring 31, a key 35 being formed on the inner edge of saidwasher which lits in a longitudinal groove 36 in the post 23 to preventsaid washer from turning, which groove extends from the lower end of thepost. A. lock nut 37 screws on the lower threaded end of the post 23againstthe washer 34 and locks the cutter on the post against turning.

The cutter is rotated by a wrench applied to the wrench grip 27. rlheadjustment of the conical split bearing 19 ensures accurate adjustmentof the post 23 and the cutter 30.

Having described my invention, l claim:

1. 1n a cylinder reboring device, a sup porting member having avertically arv A nut 24 ranged sleee portion and an integral flangeextending at 'rightangles to theaxis esaid sleeve portion, said flangehaving radially arranged slots of ,different lengths and notheein iteperiphery for the "reception Of'loolts adapted to secure said supportingY member to a'cylinderblock, the longer slots being closed at both theirinner 4and outer ends and extending inwardly toward the axis of lieWithinthe periphery of saidA sleeve p01'- tion, said sleeif'ejportion:having vertically arranged slots lcommunieating with Said longer slotsso that the Vabove mentioned bolts mayv be located partially Within'ftheconfines ,of saidV sleeve'portiomthe integral surface of vthe upper end`et' said.sleev.eportion `being 'screw threaded to `receive a eupportfor an adjustable :bearing and" centering member, said bearingV Supporthaving a iange which is adapted to Seat upon the upper endV of saidsleeve portion', a. `cutter post` extending through said bearing andVcentered thereby, anda cutter head located upon the lower end of saidCutter post. 72, In anylinc'ler reboring device, af supporting memberadapted'to be secured to a said sleeve portion to points WhichVVconfines of said sleeve, said sleeve having vertically arranged Slotsto communicate with the radial Slots above mentioned, a flanged bearingeupport screw threaded into the' top ,of said' Sleeve, said-bearingsupport having aconicalseat therein, a eontractible conically shapedbearing fitting Vwithin said seatfandfliavingfa Shoulder at1ts-upper2end, a lcutterpost vertically ar-` ranged VWithin sa-idbearing, a nut` screw threaded. into'said bearingfsupport andV so`arranged as tonontaet With said shoulder and to causethe conicalbearing member to oe-contracted when the nut is screweddown- Wardly intosaidbearingguppen@` anda -out'ter head upon the lower endaof said cut-`ter post. Y -In vtestimony Whereof atiiX VVmy signature.

Airman PERRY.

